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Thread: Calculating EP focal lengths to build a balanced set

  1. #31
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    Default Re: Calculating EP focal lengths to build a balanced set



    Quote Originally Posted by j.gardavsky View Post
    Congratulations not_Fritz, I am feeling happy with you!

    Lacerta Vienna is on the Danube river, they truly ship river up the Kelheim gorge, then through the Rhein-Main-Donau channel, then from Frankfurt down the Main/Rhein to Amsterdam, but there are some fine wineyards on the both river sides, and from Amsterdam in the big containers as usual to the U.S.

    Happy waiting,

    JG
    The KK family reunion is scheduled in 1-2 weeks.
    j.gardavsky and SpyderwerX like this.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

  2. #32
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    Default Re: Calculating EP focal lengths to build a balanced set

    Good show nFA !
    I was out trying my 9mm in my 127 MAK, but the atmosphere was not even close to supporting even this.
    I have the 4,6,9,12.5,18, and the 25. I missed the 5, and 7 for some reason. I have yet to really put them all through the paces with my 4 scopes to see what works best in what.

    Come hither clear skies...

    I look forward to more from you on this.
    Clear skies to you Sir.
    Mark

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    , 4 Planets, other cool stuff.
    Es126fcd100, Sw100edPro, Es80, Lxd75 8, 127MakSlt. kk ortho set, pentax xw's, TV pan, leitz periplan, leica HC, meade.
    Swaro 10x30, pentax 8x43, obie 25x100.
    Mounts for all.

  3. #33
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by Eagleheaf View Post
    Good show nFA !
    I was out trying my 9mm in my 127 MAK, but the atmosphere was not even close to supporting even this.
    I have the 4,6,9,12.5,18, and the 25. I missed the 5, and 7 for some reason. I have yet to really put them all through the paces with my 4 scopes to see what works best in what.

    Come hither clear skies...

    I look forward to more from you on this.
    Clear skies to you Sir.
    Your spacing looks good Mark. Unless you want to complete the set I would not wary about 5 and 7mm.
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  4. #34
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by Eagleheaf View Post
    Good show nFA !
    I was out trying my 9mm in my 127 MAK, but the atmosphere was not even close to supporting even this.
    I have the 4,6,9,12.5,18, and the 25. I missed the 5, and 7 for some reason. I have yet to really put them all through the paces with my 4 scopes to see what works best in what.

    Come hither clear skies...

    I look forward to more from you on this.
    Clear skies to you Sir.
    for some reason Agena wasn't carrying the 5mm. when i had the very similar HDs from UO the 5mm was a real work horse in my f5 Z12. o like the 1mm fl spacing at short fls, 4,5,6,7. it allows you to wring every last bit of detail out of a really good night. dialing in the perfect magnification is a good thing.
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    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

  5. #35
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    Default Re: Calculating EP focal lengths to build a balanced set

    I do have a 5, and 7, but the 5 is a plossl that came with my SW100. The 7 is my Pen XW. With all I should be ok.
    I have all my calculations for each scope written in the front of my IDSA book. :-)
    Mag to Exit pupil etc.
    I would have known none of this but for this forum and threads here. I believe Gabby hooked me up last year with her write up. And the discussions here since then have been essential. Thank you all.
    Mark

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    , 4 Planets, other cool stuff.
    Es126fcd100, Sw100edPro, Es80, Lxd75 8, 127MakSlt. kk ortho set, pentax xw's, TV pan, leitz periplan, leica HC, meade.
    Swaro 10x30, pentax 8x43, obie 25x100.
    Mounts for all.

  6. #36
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by Eagleheaf View Post
    I do have a 5, and 7, but the 5 is a plossl that came with my SW100. The 7 is my Pen XW. With all I should be ok.
    Your braver with regard to ER than I! I get queasy at the idea of a 2.5mm eye relief on a Plossl. That's less than the 3mm on a 4mm Orthoscopic.

    I have all my calculations for each scope written in the front of my IDSA book. :-)
    Mag to Exit pupil etc.
    I would have known none of this but for this forum and threads here. I believe Gabby hooked me up last year with her write up. And the discussions here since then have been essential. Thank you all.
    Yes, I keep a spreadsheet since my collection is somewhat volatile. Especially the OTAs but also sometimes the eyepieces that I decide aren't 'keepers'.
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    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

  7. #37
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    Default Re: Calculating EP focal lengths to build a balanced set

    I’m really liking what I’ve read on the KK Orthos and especially like the price point, looks like Agena is sold out across the board!!
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  8. #38
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by JustinG View Post
    I’m really liking what I’ve read on the KK Orthos and especially like the price point, looks like Agena is sold out across the board!!
    Last year they sold out too. Hopefully they will reappear.
    Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7 Newtonians: Z12 f5 Catadioptrics: VMC110L, Intes MK66 EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binocular Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG

  9. #39
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    Default Re: Calculating EP focal lengths to build a balanced set

    Quote Originally Posted by JustinG View Post
    I’m really liking what I’ve read on the KK Orthos and especially like the price point, looks like Agena is sold out across the board!!
    There seems to be very little supply of these left. I think a couple of European vendors still have a few. We all hope this situation changes soon. Another thread on the KK topic: Not good news from Kokusai Kohki.
    ~Frankie~ My mind: Always on...Slightly off.
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  10. #40
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    Default Re: Calculating EP focal lengths to build a balanced set

    Hello all,

    it looks like Lacerta in Vienna (teleskop-austria.at) can grab the KK Fujiyamas from the vendors around, and deliver to you when you place an order.
    Before ordering, you must subscribe to Lacerta (teleskop-austria.at) as a physical person, and then log in before placing an order.
    https://teleskop-austria.at/index.php?liste=18#m

    The risk is, that the fate of the KK Fujiyama orthos may turn out to be the same as that of the Baader Genuine Orthos, ZAO II, and ZAO I:
    The Zeiss Abbe (3 - 1) design is with the Schott glass materials, and when the manufacturing runs out of the economic availability of glass, then there is a break or even a production stop.
    When they take the replacement glass materials, then the optical performance drops to the bottom line,
    like the Lambda Ortho in my socks drawer collection - badly loaded with the CA.

    Hoping this helps,

    JG
    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; Docter Nobilem 7x50 Porro; Jenoptem 7x50W, 10x50W; BA8: 10.5x70, 15x85; 25x100FB, AsahiPentax 8x40, Refractors: Sky-Watcher 150mm/750mm; Leica APO Televid 82mm (25x-50x WW ASPH); EPs:Baader Classic Orthos; Fujiyama ortho, Leica B WW, ultrawide zoom ASPH, Periplan GF, HC Plan S, L; DOCTER UWA; Wild UW mil; Tele Vue Delos, Nagler Zoom, Plssls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Hensoldt mil; Filters: Astrodon, Astronomik, Baader (CCD), TS;
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  11. The Following 3 Users Say Thank You to j.gardavsky For This Useful Post:

    not_Fritz_Argelander (02-19-2018),sketrip (02-19-2018),SpyderwerX (02-19-2018)

 

 
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